1 results about "Ammonium sulfide" patented technology

Ammonium sulfide, also known as diammonium sulfide, is an unstable salt with the formula (NH₄)₂S. Aqueous solutions purporting to contain this salt are commercially available. With a pKₐ exceeding 15, the hydrosulfide ion cannot be deprotonated to an appreciable amount by ammonia. Thus, such solutions mainly consist of a mixture of ammonia and SH. Ammonium sulfide solutions are used occasionally in photographic developing, to apply patina to bronze, and in textile manufacturing. Also, due to its offensive smell, it is the active ingredient in a variety of foul pranks including the common stink bomb.